What does 若い mean?
若い is a Japanese adjective meaning “young” in English. It can also be translated as “immature, low (number)” depending on context. It is written as 若い in kanji, わかい in hiragana, and wakai in romaji. This word is part of JLPT N5 vocabulary.
Example sentence
「彼女は若いですか」「はい」
"Is she young?" "Yes, she is."